US2070371A - Winder - Google Patents

Description

Feb. 9, 193-1. A. PETERSON 2,070 37 WINDER Filed Sept. 20, 1935 2 Sheets-Sheet l INVENTO Burt A Peters on ATTO EYS v FeB. 9, 1937. B. A. PETERSON WINDER Filed Sept. 20, 19:55

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Il -l INVENTOR Burt 14. Pet e rson Patented Feb. 9, 1937 WINDER Burt A. Peterson, Rockford, Ill., assignor to Barber-Colman Company, Rockford, 111., a corporation of Illinois Application September 20, 1935, Serial No. 41,353

4 Claims. (01. 28-26) T QFFIQE F'I'his invention relates to winders, as, for example, ball and beam warpers, and more particularly to means for causing the yarn to be wound under pressure and for counteracting ai' y tendency to make the yarn mass eccentric or tapering.

The specific embodiment herein shown of the invention is an improvement upon the mechanism disclosed in the Colman Patent No. 1366, 237, dated January 25, 1921. In that mechanism a weight 427, through a system of levers, pressed the yarn mass against the Winding drum. Since the leverage exerted by the weight was not variable, as much pressure was applied by the Weight to a full warp beam as to an empty beam; consequently the pressure exerted upon a full beam as compared with the pressure placed upon an empty beam, was greater by an amount equal to the weight of the yarn mass. It is desirable that all portions of the yarn mass shall be wound under approximately constant pressure. The object of the present invention is to provide a construction that will keep the pressure approximately constant during the winding of the entire yarn mass.

In the accompanying drawings:

Figure 1 is a fragmental right-hand end elevation of a beam warper embodying the present improvements.

Fig. 2 is a fragmental front elevation of the warper.

, Fig. 3 is a fragmental left-hand end elevation of the warper.

Fig. 4 is a detail view of a ratchet mechanism comprised in the present embodiment of the invention.

The drawings show a warp beam B as operatively mounted in the warper, said beam comprising a barrel b, heads b, and trunnions N. The beam is supported and rotated by means of a friction drum l rotatably mounted in the framework of the warper and driven by any preferred means. The beam B is supported with its yarn mass in peripheral contact with the periphery of the drum l by means of two arms 2 and 3 which are pivoted in the warper framework upon the axis 4. The trunnions b may be connected to the arms 2 and 3 in any desired manner.

The beam is pressed against the friction drum l by means including two screw rods 5 that extend through slots in said arms. Each rod 5 is threaded through a nut 6 having on opposite sides studs 1 that lie in elongated openings 8 in the arms. Each screw rod 5 is rotatably mounted in a yoke or coupling member 9 and held against endwise movement with relation to the yoke. The yokes 9 are pivotally mounted upon a shaft ill extending from side to side of the warper. The shaft I is rotatably mounted in the forward arms of two levers ll, said levers being pivoted in the warper framework upon the axis l2. The rear arms of the levers H are connected by means of links it to crank arms l4 fixed upon a rock shaft I journaled in the warper framework. A coiled contractile spring I6 is connected at its lower end to the left-hand crank arm M and is anchored at its upper end to a rearward extension ll secured to the beam arm 3. It will be seen that the spring it exerts force to lift the rear arms of the levers H and thus draw the beam arms 2 and 3 down to hold the barrel of the beam B pressed against the friction drum I.

In order to allow the beam to rise as yarn is wound upon the barrel 1) the screw rods 5 are rotated in the direction to cause the nuts 6 to travel upwardly on the screw rods. For this purpose a bevel gear i8 is fixed to the lower end of each screw rod 5, said gears meshing with bevel gears i9 fixed upon the shaft Hi. It will be seen that rotation of the shaft It will cause the screw rods 5 to be simultaneously rotated.

The shaft I0 is rotated in the direction to produce upward movement of the nuts 6 by means comprising aroller ratchet of the silent type. This ratchet may be of any common or desired construction. Herein, it consists of a disk 20 fixed on the left-hand end of the shaft l0, and a coacting roller 2! carried by a member 22 which is virtually a bell crank. In the opposite sides of the member 22 are slots 23 through which the trunnions 24 of the roller 2i ext-end. The member 22 is pivotally supported upon the shaft it and is arranged to be oscillated by means of a crank disk 25 and a pitman 26. The crank disk 25 is rotatably mounted in the warper framework and is driven from the shaft of the friction drum 1 through gears 21. Counterclockwise movement of the member 22, as viewed in Figs. 3 and 4, is idle and produces no movement of the disk 23. Clockwise movement of the member 22 causes the roller 2! to frictionally engage the disk 20 and thus cause the shaft Hi to turn, except when the roller 2! is displaced from the lower ends of the slots 23 by means to be now described.

An arm 28 rigidly secured to the rock shaft l5 has a forked forward end 29 which underlies the trunnions 2d of the roller 2L When the arm 28 is in the position shown in Fig. 4, its forked forward end does not interfere with the roller 25, but when said arm rises so as to lift the trunnions of the roller 2! in the slots 23 the roller is prevented from clutching the disk 20, to the bell crank member 22 and consequently clockwise movement of the member 22 imparts no movement to the disk 20 and the shaft i9.

Any desired means may be employed to damp the vibrations of the levers H, as for example, a dashpot 3B, the plunger of which is connected to a crank arm 3| which is rigid with the rock shaft l5.

Means is provided for manually rotating the screw rods to raise and lower the beam arms 2 and 3 when the beam is to be removed from the warper and when an empty beam is to be lowered into place upon the friction drum i. Said means comprises a squared stud 32 adapted to receive a crank (not shown), said stud being connected to the shaft ill by means of a sprocket chain drive 33, as described in said Patent No. 1,366,447.

In operation, the friction drum I is rotated to revolve the beam B in the direction indicated by the arrows in Figs. 1 and 3 to wind the warp threads upon the beam. The spring 56 presses the yarn mass on the beam with the desired pressure against the drum I. As the yarn massincreases in diameter, the arms 2 and 3 are forced upwardly against the tension of the spring l6, thus lifting the screw rods 5 and causing the levers ii to turn, the rear ends of said levers moving downwardly against the tension of the spring it. Such turning movement of the levers Ii causes the forward end of the stop arm 28 to move downwardly. When said stop arm has swung downwardly so far as to be free of the trunnions of the roller 2!, said roller becomes effective to grip the disk 23 so that the pitman 2G is enabled to impart one or more movements to the disk 20 and the shaft it]. The screw rods 5 are thereby turned through a partial revolution in the direction to lower said rods. Such movement of the screw rods enables the spring IE to raise the rear arms of the levers 5i and to lift the stop arm 28, thus causing suspension of operation of the roller ratchet 2d, 2!. The mechanism thus operates intermittently to produce a succession of slight adjustments of the connection between the beam arms 2 and 3 and the pressure-applying means as the yarn mass increases in diameter.

- It will be seen that as the beam fills and the beam arms 2 and 3 rise, the rearward extension I! descends, thus reducing the tension of the spring 16. The increase in the weight of the yarn mass is thus compensated by reduction in the tension of the spring It so that the pressure to which the yarn mass is subjected throughout the operation of filling the beam is approximately constant.

Although the present embodiment of the invention has been described in considerable detail, it will be understood that the invention is not limited to such details except to the extent indicated in the appended claims.

I claim as my invention:

1. A winder having, in combination, a friction driving drum, means for supporting a yarn container with its yarn mass in peripheral contact with the driving drum, and means for pressring the yarn mass against the drum, said pressing means including yarn-controlled means for and yarn-controlled means for automatically adjusting the anchorage to reduce the tension of the spring as the yarn mass grows. 3. A warper having, in combination, a supporting framework, a friction driving drum rotatably mounted in the framework, two arms pivoted in the framework for supporting a warp'beam with its yarn mass in peripheral contact with the drum, means connected to said arms for pressing said yarn mass against the drum, said means including a spring, a rearward extension on one of said arms to which said spring is anchored, and yarn-controlled means for adjusting the connection between said arms andthe pressing means as the beam fills andsaid arms,

rise, the lowering of said rearward extension as the arms rise causing reduction in the tension of the spring to compensate'for increase in'the weight of the yarn mass.

4. A warper having, in combination, a supporting framework, a friction driving drum rotatably mounted in the framework, .twoarms pivoted in the framework for supporting a warp beam with its yarn mass in peripheral contact with the drum, means connected to said armsifor pressing said yarn mass against the drum,said

means including a spring, an anchorage .forithe spring, and yarn-controlled means'for adjusting the connection between said arms and the pressing means as the beam fills and for adjustingthe anchorage to reduce the tension of th'e'spring' to compensate for increase in the weight of theyarn mass.

BURT A. PETERSON.

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